unisonic technologies co., ltd ur533 linear integrated circuit www.unisonic.com.tw 1 of 7 copyright ? 2009 unisonic technologies co., ltd qw-r102-026,d 5a adjustable/fixed ultra low drop-out linear regulator ? description the utc ur533 is ultra-low dropout regulators with 5a output current capability. this device has been optimized for low voltage applications including v tt bus termination, where transient response and minimum input voltage is critical. the utc ur533 is ideal for low voltage microprocessor applications requiring a regulated output from 1.3v ~ 5.7v with a power input supply of 1.75v ~ 6.5v. current limit ensures controlled short-circuit current. on-chip thermal limiting provides protec tion against any combination of overload and ambient temperature that would create excessive junction temperatures. ? features * ultra low dropout voltage * remote sense operation * fast transient response * load regulation: 0.05% typical * 0.5% initial accuracy * on-chip thermal limiting 1 to-220-5 to-252-5 1 to-263-5 1 lead-free: ur533l-xx halogen-free: ur533g-xx ? ordering information ordering number normal lead free halogen free package packing UR533-XX-TA5-T ur533l-xx-ta5-t ur533g-xx-ta5-t to-220-5 tube ur533-xx-tn5-r ur533l-xx-tn5-r ur533g-xx-tn5-r to-252-5 tape reel ur533-xx-tq5-r ur533l-xx-tq5-r ur533g-xx-tq5-r to-263-5 tape reel ur533-xx-tq5-t ur533l-xx-tq5-t ur533g-xx-tq5-t to-263-5 tube note: xx: output voltage, re fer to marking information .
ur533 linear integrated circuit unisonic technologies co., ltd 2 of 7 www.unisonic.com.tw qw-r102-026,d ? marking information package voltage code marking to-220-5 to-252-5 to-263-5 15 :1.5v 25 :2.5v ad:adj utc ur533 xx voltage code date code lot code l: lead free g: halogen free 12345 ? pin descritions pin no. pin name descrition 1 v sense remote voltage sense. 2 adj/gnd adjust for ur533-adj , the output voltage determined by feedback voltage. ground for fixed output products( ur533-xx) 3 v out output voltage. 4 v cntl control voltage. 5 v in input voltage.
ur533 linear integrated circuit unisonic technologies co., ltd 3 of 7 www.unisonic.com.tw qw-r102-026,d ? block diagram
ur533 linear integrated circuit unisonic technologies co., ltd 4 of 7 www.unisonic.com.tw qw-r102-026,d ? absolute maximum ratings (ta = 25 ) parameter symbol ratings unit input voltage v in 7 v control voltage v cntl 13.2 v operating junction temperature t opr -4 0~+85 storage temperature t stg -65~+150 note absolute maximum ratings are those values beyond which the device could be permanently damaged. absolute maximum ratings are stress ratings only an d functional device operat ion is not implied. ? thermal data parameter symbol ratings unit to-220-5 3 /w to-252-5 8 /w junction to case to-263-5 jc 4 /w ? electrical characteristics (t c = 25 , v out = v s , v adj = 0v unless otherwise specified.) for ur533-ad(adjustable) parameter symbol test conditions min typ max unit v in = 2.0v, v cntl = 2.75v,i out = 10ma 1.243 1.250 1.257 v reference voltage v ref 2.05v v in 5.5v,2.7v v cntl 12v, 10ma i out 5a 1.237 1.250 1.263 v output voltage v out 3v v in 7v, 10ma i out 5a v ref 1.5 5.7 v line regulation ? v out 1.75v v in 5.5v, 2.5v v cntl 12v, i out = 10ma 1 3 mv load regulation ? v out v in = 2.1v, v cntl = 2.75v, 10ma i out 5a 1 5 mv v cntl ?v out v in = 2.05v, ? v ref = 1%, i out = 5a 1.05 1.18 v dropout voltage v in ?v out v cntl = 2.75v, ? v ref = 1%,i out = 5a 0.4 0.5 v current limit i limit v in = 2.05v, v cntl = 2.75v 5.2 a control pin current i ctrl v in = 2.05v, v cntl = 2.75v,i out = 10ma 2 6 ma adjust pin current i adj v in = 2.05v, v cntl = 2.75v 50 120 a minimum load current i load v in = 3.3v, v cntl = 5v 5.0 10 ma ripple rejection rr v in = 3.75v, v cntl = 3.75v, f = 120hz, c out = 22f tantalum, i out = 2.5a 80 db thermal regulation t a = 25c, 30ms pulse 0.002 0.02 %/w thermal shutdown 150 for ur533-xx(fixed) parameter symbol test conditions min typ max unit ur533-15 v out 3v v in 7v, 10ma i out 5a 1.47 1.5 1.53 v output voltage ur533-25 v out 5.1v v in 7v, 10ma i out 5a 2.474 2.5 2.526 v line regulation ? v out 1.75v v in 5.5v, 2.5v v cntl 12v, i out = 10ma 1 3 mv load regulation ? v out v in = 2.1v, v cntl = 2.75v, 10ma i out 5a 1 5 mv v cntl ?v out v in = 2.05v, ? v ref = 1%, i out = 5a 1.05 1.18 v dropout voltage dropout voltage v in ?v out v cntl = 2.75v, ? v ref = 1%,i out = 5a 0.4 0.5 v current limit i limit v in = 2.05v, v cntl = 2.75v 5.2 a control pin current i ctrl v in = 2.05v, v cntl = 2.75v,i out = 10ma 2 6 ma minimum load current i load v in = 3.3v, v cntl = 5v 5.0 10 ma ripple rejection rr v in = 3.75v, v cntl = 3.75v, f = 120hz, c out = 22f tantalum, i out = 2.5a 80 db thermal regulation t a = 25c, 30ms pulse 0.002 0.02 %/w thermal shutdown 150
ur533 linear integrated circuit unisonic technologies co., ltd 5 of 7 www.unisonic.com.tw qw-r102-026,d ? typical application circuit note: c2 is recommended to use 22f solid tantalum or 100f aluminum electr olytic for output stability. note: c3 is recommended to use 22f solid tantalum or 100f aluminum electr olytic for output stability.
ur533 linear integrated circuit unisonic technologies co., ltd 6 of 7 www.unisonic.com.tw qw-r102-026,d ? typical perfomance characteristics dropout voltage vs output current dropout voltage (v) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 output current, i out (a) 0 1 2 3 4 5 0 25 50 75 100 125 150 175 -0.20 -0.15 -0.10 -0.05 0 0.05 0.10 load regulation vs temperature output voltage deviation (%) junction temperature, t j (c) 1.225 1.230 1.240 1.250 1.260 1.265 1.275 25 75 125 175 junction temperature, t j ( ) reference voltage vs temperature output voltage deviation (%) 150 100 50 0 ur533-adj 1.270 1.235 1.245 1.255 3 5 7 9 11 25 100 175 junction temperature, t j ( ) short-circuit curr ent vs temeperature short-circuit current (a) 125 75 ur533-adj 0150 50 0 20 40 70 90 10k frequency (hz) ripple rejection vs frequency ripple rejections (db) 100 10 100k 1k (v in -v out ) 3v 0.5v v ripple 2v i out = 5a 80 60 50 30 10 i=5a ta=0c ta=25c ta=125c
ur533 linear integrated circuit unisonic technologies co., ltd 7 of 7 www.unisonic.com.tw qw-r102-026,d utc assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all utc products described or contained herein. utc products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
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